We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Gregory Osmundson, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, and Elise In’t Veld, as well as experienced optometrists Andrea McCann and Emily Walters combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Finest Eye Specialists in the Tri-State Area

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Osmundson, Hammer, Dierks, Eide, In't Veld, and West perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. Osmundson and In't Veld  at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

  • Sue D.

    Everyone there is so friendly and also are very professional in the jobs they do. Everyone knows their specific job and they are very good at what they do!!
    I especially like Dr Walters....
    read more

  • Burnett D.

    HiI visited with Opthamology LTD for an initial appointment and the tech who took my history did an excellent job. The visit with the Ophthalmologist was very thorough and comfortable. As a new patient I look forward to future... read more

  • Nell E.

    Very helpful and knowledgeable - I am most satisfied with my visit there. I will definitely go back.

  • Carol G.

    Eye care at Opthamology Ltd is top of the line. I’ve been a patient there for the past four years. Never had such good, caring professional eye care ever before. I have complete confidence in these top notch professionals and... read more

  • Chad R.

    I love the thoroughness of my eye exam at Opthamology LTD. I feel confident that the health of my eyes are their #1 concern, and I appreciate it. plus, the staff is out of this world friendly. I highly recommend... read more

  • Patrick E.

    Opthamology Ltd service they provide is very good. I would recommend them to any one who needs help with there vision.

  • Vicky L.

    I would recommend Ophthalmology LTD to anyone looking for eye care! The doctors and staff are wonderful, and they check every detail in eye care! I trust them with my eyes!

  • Mary L.

    The best care I believe is out there. Their knowledge and expertise is above standard. I have gotten great care along with the explanation of what they’re doing and along with what I can do to help. You don’t... read more

  • Janice Q.

    They are very professional but yet very personable when listening to your eye problems . I would highly recommend them!

  • Larry R.

    Really pleased with her “friendly professionalism”. Explained options for dealing with cataract. Exam was thorough.

  • Jeanne M.

    It was a great place very clean and the utmost of services, will be having my eye surgery there

  • Jean R.

    Great service for my eye exam and very thorough.

  • Brian N.

    Awesome staff! Very professional and compassionate. Took their time to answer questions. Dr Hammer was very though compassionate and took his time to answer all questions.

  • Lisa C.

    They were very thorough, and got me into surgery right away.
    Dr. Thomas was very kind and informative. Would go back to him.
    From check in to check out everything went smoothly. Would highly recommend this facility.

  • Cindy E.

    All are professional, friendly, and answer my questions.

  • Diane D.

    Everyone was so pleasant and efficient. I felt very confident I was receiving excellent care.

  • Donna G.

    I’m thankful that Ophthalmology LTD is near my location & we have such wonderful doctors to tend our eye medical needs. The staff & doctors are wonderful.

  • Sue L.

    Dr Walters was very warm and professional. She was very explanative and thorough. I was impressed with all the staff and the Dr.

  • Gary D.

    Physician care and staff professionalism were very good. Technician doing testing was rather cool and aloof.

  • Suzanne L.

    I was referred to Ophthalmology Ltd by my regular eye doctor. I had an excellent first-time experience! The check-in process was easy and everyone was nice and courteous. My appointment ended up being much shorter than anticipated, and Dr. Atchison... read more

  • Jane M.

    Everyone is so kind and friendly! Makes it easy to go see them!!

  • Carol B.

    They are friendly an care about U. They do not make U wait a long time for your App.

  • Ellie S.

    My experience was very good. I have confidence in Dr Acheson.

  • Linda M.

    I am really impressed with the efficiency of the clinic, keeping clients on time as scheduled, while providing friendly care all around, from the front registration desk, to the nurses, technicians, and Dr Thomas, the Ophthalmologist I saw! Everyone is... read more

  • Ruth G.

    Always very friendly and efficient

  • Cheri A.

    A very professional and positive experience. The information concerning my visit was explained in an understandable and positive way. Cheerful , knowledgeable and professional would cover this visit.

  • Tim H.

    Dr. Geraets is an excellent, caring doctor and my mother Arlene has nothing but good things to say about him and his care he gives her. Would highly recommend his services!

  • Cheryl U.

    Very professional

  • lottrt

    Ophthalmology Ltd has the absolute finest doctors and staff that you will find anywhere. I trust them 100% and won’t go anywhere else 👍🏻

  • Shelby F.

    I have very complicated eye issues and I feel blessed to have found Opthalmology Ltd when I moved to Sioux Falls four years ago. The staff are knowledgeable and compassionate and truly take the time to listen to and... read more

  • Jeffrey L.

    Prompt, professionally personal and thorough.Cutting edge technology. The entire experience was positive.

  • Ron O.

    I have had a very good experience getting ready for cataract surgery. Everyone is pleasant and polite.I was given all the options with no pressure. It was my choice to do what I thought would be best... read more

  • Evie W.

    I saw Dr Osmundson for a re-check. His nurses are the sweetest, they listen to you and absolutely care about you health. We are self- pay (no insurance), and I was to use an expensive eye drop, ($226.00).... read more

  • Sandy T.

    The office, staff and doctors are very knowledgeable and nice.

  • Marjie H.

    they had lots of understanding on whats going on with my eyes the doctor was very nice patient with us and made sure i understood what is going on i give her 10 stars if i could

  • Jill T.

    Things are explained so we can understand! Like the staff there

  • Diane V.

    Great place-everyone was helpful, efficient, and courteous! I have complete confidence in Dr. West! He has done cataract surgery on both my eyes, as well as laser on each eye. I was pleased they got me scheduled... read more

  • Patty J.

    It was a wonderful experience. The entire staff is very nice, and I was amazed at how quickly I was seen and tested. Dr. Hammer is wonderful and he explains everything, and takes the time to listen to your questions.... read more

  • Barb M.

    Friendly, knowledgeable staff. Very thorough with instructions for my upcoming cataract surgery.

  • Cathy K.

    Everyone is so polite & friendly. Definitely receive a full exam.

  • Charles B.

    The Doctor and his team provide the best eye care in the region. Thanks for your care and concerns. Charles

  • Iris H.

    I have been going here for at least 3 years. They are competent and very caring, lovely doctors. Would trust no one else with my eyes.

  • John B.

    What an enjoyable experience. I highly recommend Ophthalmology Ltd for all eye services.

  • Kathy S.

    An excellent, knowledgeable and caring clinic. Highly recommended.

  • Tim C.

    Very professional. Put me at ease and took the time to explain my issues. Highly recommend.

  • Thomas A.

    I am so impressed with the staff at Ophthalmolgy Ltd. Dr. ACHESON IS very gentle and kind. I feel totally at ease with her treating me! I'm so happy that I chose Ophthalmology Ltd.

  • Twyla J.

    I've been going to Ophthalmology limited for 15 years and have seen Dr. Osmundson and Dr. McCaan, they are both great! Professional yet personable! Highly recommend!

  • Heather D.

    I was more than pleased with my experience. Not only was I addressed as the patient but when my husband had questions they were more than happy to explain to him also. I know I’m where I need to be... read more

  • Virginia B.

    I have seen Dr Hammer for 25 years! He removed cataracts and secondary cataracts. He is always prompt, friendly and I trust him completely. I would, of course, recommend him for any service he provides!

  • Anne L.

    Dr west is amazing. So patient and kind